Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Quote on request
Quote onlyQuote on request
Quote onlyWhat drives the bill
The metric that actually scales your invoice.
Quote-based annual contracts priced by traffic volume.
Quote-based, generally aimed at companies with a data team and a warehouse already in place.
Free tier
No free tier; demo on request.
Free tier available for small teams.
Open source
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
AB Tasty · since 2009
Established
Eppo (Datadog) · since 2020
Strengths
Limitations
Best for
European e-commerce and media companies with GDPR-driven vendor requirements.
Data-mature organisations where experiment results must withstand scrutiny.
All of these integrate with: Segment, Slack.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.